Well, I bought a bed that is unreasonably expensive… really only wanted it to help me stop sweating through my sheets during the summer (because it’s water cooled), but it also has sensors which make a composite sleep score. It gauges time to fall asleep, resting heart rate, heart rate variability, tossing and turning, sleep cycles, etc. It correlates decently well with my performance in the gym too.
Anyways, it makes that composite sleep score number and lets me know if I slept like shit the night before (which is commonplace for me), but it also shows that my sleep is consistently better when kept around 6 hours vs 8… This aligns with my beliefs on my sleeping habits as well.
No problems with you chiming in at all - ask/critique away!